The top knot (or "man-bun") is so in right now, but it may cost you your lovely locks down the road.

The culprit is traction alopecia -- a type of gradual hair loss caused when hair is tightly pulled over months or years. The tension of the hair being pulled damages it, causing thinning and eventual failure of the follicle to produce hair. The hair loss is most visible around the temples and hairline. [Huffington Post]

With the man-bun/mun/top knot trend bigger than ever, now may be the perfect time for the hipster in your life to find something new.

So, enjoy looks like this while you still can:

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